Coming soon as an eBook:  Rocket McGee: Avoiding Trouble!  or  Flight of the Golden Caterpillar.  Four well-schooled and well-traveled but lonely young people about 12 years old forge a reluctant and rocky alliance in a perilous, high-tech adventure to save one of their parents.  Along the way, they discover friendship, a place in the world, and the super-human power to work together.